jakebohall - 2:35 pm on May 22, 2013 (gmt 0)
What type of traffic do you currently get because of those articles?
What quantity/quality of links do you get because of those articles?
Is it possible for you to recreate the content (in your own words), and just replace the articles?
If it is good content and its generating traffic, you should try to find a way to recreate original content to replace what is there. At the very least, you should put some 301 redirects in place to the most similar content that will remain on your site.